> 10 year old client

Or simply using a terminal with multiple windows open. I hard wrap at 50 chars and I haven't died from exertion yet.

The ability to display commit messages nicely probably is not the metric by which people chose their email client. Wrapping text where it makes sense is also a task which is best done by the human writing it. I'd rather have a meaningful text flow with sense than some machine hard wrapping in the mi dle of the sentence.